Portable electric light.



J. T. DRUFVA.

PORTABLE ELECTRIC UGHT. PPLxcATloN FILED JULY 31.1917.

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Imm to it ins A is eci n n nei; 1s pressed im 1 ma w'lch 1S moved in p, said peaxve im po e here sai ino -elect is provided a transverse disk 19 of insulating material, and said disk at one edge is recessed, as at 20, to permit the movement of a switch, hereinafter referred to, and at opposite sides oli/.its center said disk is pret'- crably formed with openings 2l (F ig. 2) through which an instrument may be applied for forcing the battery 17 from the casing in the event that said battery should not readily slide from said casing when necessary. At the center of the disk '19 is -formed an opening 22 to receive a metal cup 23 which is cylindrical in cross-section and has a Hangc 24 at its lower end to prevent upward movement of the cup 23 from its proper position within the disk 19, and at its upper edge said cup is flanged inwardly, as at Q5, to engage the lower outwardly flanged edge ot' a cap 2G which is held at its inner portion within the cup 23 and has a normal outward tension in a direction therefrom by reason of a spring Z7 which is coniined within said' cup and cap, the lower end of the spring bearing against the bottom of the cup and the upper end ot the spring against the crown of the cap. Upon the exterior of the casing l0 is provided a tluimb-pieee or slide 28 of any usual or suitable construction, and this slide is connected by rivets 29 with a longitudinally movable plate or strip 30 located at the in ner side ot the casing 10, said casing being formed with slots 31 to permit the slide and rivets 29 with the plate or strip 30 to have a given longitudinal movement, said parts being shown in Fig. 1 as having been moved forwardly to complete the circuit through the lamp and battery. The outer end p0rtion of the plate or strip 30 is secured by the i rivet 32 between two non-conducting or insulating strips 33, 34, as shown more clearly in Fig. 3, and between the outer portions of these strips 33, 34, is confined an arm 35 of the switch 36, which comprises the longitudinally disposed arm 35 and a transverse arm 37, both arms heilig formed 'from a strip of metal, one end of which is bent at rightangles to the body ot the strip. The arm of the switch 36 is secured by a rivet 38 to the insulating strip 33, and said rivet 38 is insulated from the casing 10 by means ot the liber strip The arm 35 ot' the switch 36 is separated by a space from the upper end of the strip 30, as shown in Fig. 3, so that there may be no electrical connection between said two parts. The arm 37 of the switch 36 extends transversely between the cap 2G and the inner terminal 39 of the lamp 14, and in all positions of the switch 36 the arm 37, cap 26 and cup 23, are in electrical connection. with each other and with the positive pole ot the battery 17, which is spgjing t3. in Fig. l 1 illustrate the switch 36 as having been moved forwardly by means of the slide 28, and in this position of thesaid parts the arm 37 of the switch is against the. terminal 39 of the lamp and an electric circuit exists from the positive pole of the battery through the cup 23, cap 26, arm 37 and terminal 39 of the lamp, and from the negative pol of the battery through the spring 18, casing 10, and rellector 13 to the lamp. The lamp will remain lighted so long as the parts are in the rela. tive positions shown in Fig. 1, and when it is desired to extinguish the lamp the slide 28 will be moved toward the inner or rear end ot the casing 10 and through the strip or plateI 30, and strips 34 draw the arm 37 ot' the switch 3G away from the lamp 14 and toward the disk 19, the result being that said arm 37 will telescope the cap 26 within the cup Q3 in opposition to the torce of the spring 27. The spring 27 must not be of suliicient strength to move the slide Q8 and switch 36 outwardly toward the lamp, but said spring must have sufficient force to keep the cap 26 alwaysypressed against the arm 37 ol the switch .so that when said arm is lagainst the terminal 39 of the lamp there Awill be maintained an electrical connection between said arm and the positive pole of the battery. When the slide Q8 and switch 36 are moved outwardly toward the lamp the circuit will be established and the lamp lighted` and when said slide and switch are moved in a reverse direction the cap 26 will be telescoped within the cup 23 and the eircuit will be broken and the lamp extinguished.

In Figs. l to 3 inclusive l illustrate my i invention as applied to a flash light having l ing spring engaging the cap 41 andnegative pole oi the battery, and 88 a conductor which extends lengthwise within the casing 40 and is in electrical connection with the reflector 4 3 and cap 41, which is in electrical connection through the spring 47 with the negative pole ot the battery. Within the casing 40, torwardly of the battery 46, l provide a disk 48 of insulating material having a cup 4S) and spring cap 50 corresponding exactly with the like features shown in Fig. 1. fUpon the exterior of the casing 40 is secured a thumb-piece or slide izo Cgi

inercia 51 which is connected with a plate or Strip haring secured upon its forward end insulating strips 54 between which an arm of the switch 55 is Secured and which arm is .spaced from the strip or plate. "he parts numbered 5l to 55 inclusive correspond exactly with the switch tentures ileseribcd with respect to Figs. l to S and hence do not require further description. The construction shown in Fig. l corrcspontls Ywith the construction shown in Fig. i. with the exception that the exterior casing y1l() being of fiber a conductor 88 must be employed for permitting the making of the circuit. iVlien the metal casing l0 is used, the conductor S8 is not required, becaiine the circuit may be made through the casing. but when a fiber casing is employed a conductor such as must be provided.

ii'liai. i claim as in): invention anti desire to secure by Letters Patent7 is:

i. Hash lighthaving at its forward enel a lens :intl lamp and containing a battery whose negative pole is in electrical connection with one terminal of the lamp, and circuit making means comprising a conductor in engagement with the positive pole of the battery and comprising a fixed niember, a movable member adapted to telescope therewith and a springr acting against said ino-Vahle member to project, the .same in ii direction toward the other terminal of the lamp, a switch having a. transverse arm extending between said other terminal of the lamp and said movable member and engaged with and controlling the position ol said member, and an external thumbiiiece connected with .said switch for moving' the same toward and from said lamp terminal. whereby on the movement ot' Said switch in one direction the circuit iS conipleteil anil in the other direction the circuit broken.

2,61 `flash light having at its forward cnil a, lens and lamp and containingF a battery whose. negative pole is in electrical connection with one terminal of the iiimo.

and circuit making means comprise ducting cup engagement. with tive pole of the battery a ccp tel. therewith7 ay sring confined between i cup and cap and pressing Athe can t. the other terminal of the lamp. a switch having a transverse arm between csic. other terminal of the lamp anc said can anfl iil ways engaged with and contfoliin the position ofsairicap,aiiii an external tniinibv piece connected with Said switch ingr the saine toward and from terminal, wherebyr on the morena i .switch in one direction thc circuit pleted and in the other direction the. is broken.

Hash iight haring al: its torn' a lens and lamp and containing a ha" whose negative pole is in electrical connection with one tiern'iin'ai ot the lamp, an: circuit making means comprising a co ductor in engagement, wi c pole or" the battery and having a, n ber engaging said pole, a niovzihle me. i' adapted to telescope the c witii anti a spr acting to project salti movable inen'iher tL ward the other terminal ot= the lamp. a noneondiicting transverse dish' rigidly .sinV ing said fixed member of Said conducor switch having a transverse arm entendi between said other terminai of the la-nd said movable member and engag with and controlling the position of sai@ .go member, and an externai thumb-piece conneet/eel With said switch for moving the saine toward and from said lamp teriniinei whereby on the movement of saiil switch in one direction the circuit is completed. ann in the .other direction the circuit is broken.

Signed at Springfield. in the county of Hampden anti S ate of Bi'assachiisctts. this Zi'th ila); of Jing'. fi.. D. wi?.

JOHIXT T. DRUFY..

Witnesses W. BLAKE,

Hen ni' Hr 

